Mega Code Archive
Verify input (only allow digits)
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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
//package org.eclipse.swt.snippets;
/*
* Text example snippet: verify input (only allow digits)
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class TextVerifyInputDigits {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
Text text = new Text(shell, SWT.BORDER | SWT.V_SCROLL);
text.setBounds(10, 10, 200, 200);
text.addListener(SWT.Verify, new Listener() {
public void handleEvent(Event e) {
String string = e.text;
char[] chars = new char[string.length()];
string.getChars(0, chars.length, chars, 0);
for (int i = 0; i < chars.length; i++) {
if (!('0' <= chars[i] && chars[i] <= '9')) {
e.doit = false;
return;
}
}
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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